Intel Server Sockets

Early Server Sockets

1. Socket 8
   • Introduced: 1995
   • Supported CPUs: Pentium Pro
   • Key Features: Designed for early high-performance servers.
2. Slot 2
   • Introduced: 1998
   • Supported CPUs: Pentium II Xeon, Pentium III Xeon
   • Key Features: Cartridge-based design for early Xeon processors.

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NetBurst Era

3. Socket 603
   • Introduced: 2001
   • Supported CPUs: Xeon (NetBurst architecture)
   • Key Features: Early support for multiprocessor systems.
4. Socket 604
   • Introduced: 2002
   • Supported CPUs: Xeon (NetBurst architecture)
   • Key Features: Enhanced version of Socket 603 with better thermal and electrical properties.

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Core Architecture Era

5. LGA 771 (Socket J)
   • Introduced: 2006
   • Supported CPUs: Xeon 5000 series, Xeon 7000 series
   • Key Features: Supported dual-socket configurations and DDR2/DDR3 memory.
6. LGA 1366 (Socket B)
   • Introduced: 2008
   • Supported CPUs: Xeon 5500 series, Xeon 5600 series
   • Key Features: Introduced support for triple-channel DDR3 memory.

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Sandy Bridge and Ivy Bridge Era

7. LGA 1356 (Socket B2)
   • Introduced: 2012
   • Supported CPUs: Xeon E5-2400 series
   • Key Features: Designed for mid-range server applications.
8. LGA 2011 (Socket R)
   • Introduced: 2011
   • Supported CPUs: Xeon E5-2600 series, Xeon E5-4600 series
   • Key Features: Quad-channel memory support, integrated PCIe 3.0 lanes.

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Haswell, Broadwell, and Skylake Era

9. LGA 2011-3 (Socket R3)
   • Introduced: 2014
   • Supported CPUs: Xeon E5-1600/2600 v3 and v4 series
   • Key Features: Improved power delivery and DDR4 memory support.
10. LGA 3647 (Socket P)

• Introduced: 2017
• Supported CPUs: Xeon Scalable Processors (Skylake-SP, Cascade Lake-SP)
• Key Features: Supports up to 6-channel DDR4 memory, large socket for high-core-count CPUs.

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Modern Server Sockets

11. LGA 4189 (Socket P4)

• Introduced: 2020
• Supported CPUs: Xeon Scalable (Ice Lake-SP, Sapphire Rapids-SP)
• Key Features: PCIe 4.0/5.0 support, 8-channel DDR4/DDR5 memory.

12. LGA 4677 (Socket E1)

• Introduced: 2023
• Supported CPUs: Xeon Max

• Series, Xeon Scalable 4th Gen (Emerald Rapids-SP)
  • Key Features: DDR5 support, PCIe 5.0, Compute Express Link (CXL) capabilities.

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Summary of Intel Server Sockets by Era

Era	Sockets	Key Features
Early (1995-2002)	Socket 8, Slot 2	First server-grade platforms, basic multiprocessing.
NetBurst (2001-2006)	Socket 603, Socket 604	Multiprocessor and high-performance designs.
Core (2006-2011)	LGA 771, LGA 1366	Quad-channel memory, DDR3 support.
Sandy/Ivy Bridge (2011-2014)	LGA 1356, LGA 2011	Integrated PCIe 3.0, multi-channel memory.
Haswell-Skylake (2014-2018)	LGA 2011-3, LGA 3647	DDR4 memory, scalable sockets for enterprise.
Modern (2020+)	LGA 4189, LGA 4677	PCIe 5.0, DDR5, high core-count CPUs for HPC.